var xmlreqs = new Array();
var theDiv = '';
var ajaxPath = "_ajax/";

function addLoadEvent(func){
 var oldonload=window.onload;
 if (typeof window.onload!='function') {
  window.onload=func;
 } else {
  window.onload=function(){ oldonload();func();}
 }
}

function CXMLReq(type,xmlhttp,theDiv) {
 this.type = type;
 this.xmlhttp = xmlhttp;
 this.theDiv = theDiv;
}

function xmlreqGET(url,theDiv) {
 var xmlhttp=false;
 var theDiv=theDiv;
 if (window.XMLHttpRequest) {
  xmlhttp=new XMLHttpRequest();
  xmlhttp.onreadystatechange = xmlhttpChange;
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);
 } else if (window.ActiveXObject) {
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  if (xmlhttp) {
   xmlhttp.onreadystatechange=xmlhttpChange;
   xmlhttp.open("GET",url,true);
   xmlhttp.send();
  }
 }
 var xmlreq=new CXMLReq('',xmlhttp,theDiv);
 xmlreqs.push(xmlreq);
}

function xmlhttpChange() {
 if (typeof(window['xmlreqs']) == "undefined") return;
 for (var i=0; i < xmlreqs.length; i++) {
  if (xmlreqs[i].xmlhttp.readyState == 4) {
   if (xmlreqs[i].xmlhttp.status==200||xmlreqs[i].xmlhttp.status==304) {
    handle_response(xmlreqs[i].theDiv,xmlreqs[i].xmlhttp);xmlreqs.splice(i,1);i--;
   } else {
    xmlreqs.splice(i,1);i--;
   }
  }
 }
}

function handle_response(theDiv,xmlhttp) {
 var thisResponse=xmlhttp.responseText;
 if (theDiv!='') {
  document.getElementById(theDiv).innerHTML=thisResponse;
 }
}

function createRequestObject() {
 var ro;
 var browser=navigator.appName;
 if (browser=="Microsoft Internet Explorer") {
  ro=new ActiveXObject("Microsoft.XMLHTTP");
 } else {
  ro=new XMLHttpRequest();
 }
 return ro;
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors=document.getElementsByTagName("a");
 for (var i=0;i<anchors.length;i++) {
  var anchor = anchors[i];
  if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
   anchor.target = "_blank";
  }
}

window.onload = externalLinks;

function searchChange(s,c,i) {
 if (s == '' && c == '' && i == '') {
  var s_id = document.getElementById('searchSector').value;
  var c_id = document.getElementById('searchCategory').value;
  var i_id = document.getElementById('searchIndustry').value;
 } else {
  var s_id = s;
  var c_id = c;
  var i_id = i;
 }
 if (s_id != '') {
  xmlreqGET(ajaxPath+'genlist.cats.php?sector_id='+s_id+'&cat_id='+c_id+'&industry_id='+i_id,'search2');
  xmlreqGET(ajaxPath+'genlist.industries.php?sector_id='+s_id+'&cat_id='+c_id+'&industry_id='+i_id,'search3');
  xmlreqGET(ajaxPath+'genlist.locations.php?sector_id='+s_id+'&cat_id='+c_id+'&industry_id='+i_id,'search4');
 }
}

function searchGo() {
 var s_id = document.getElementById('searchSector').value;
 var c_id = document.getElementById('searchCategory').value;
 var i_id = document.getElementById('searchIndustry').value;
 var l_id = document.getElementById('searchLocation').value;
 var url = 'search-results.php?sector_id='+s_id+'&cat_id='+c_id+'&industry_id='+i_id+'&location_id='+l_id;
 window.open(url,'_self');
}

function viewMap() {
 window.open("map.php","map","width=600,height=600,scrolling=no,scrollbars=no");
}